Roller for drawing mechanism for fibrous material



Nov. 13,1923. m'mmz R. COTTAM ET AL ROLLER FOR DRAWING MECHANISM FORFIBROUS MATERIAL Original Filed Jan. 26, 1923 Patented Nov. 1.3, i923.

A tanner arnr error.

BOBEET COTTAIM, 0F OLDHAM, THOMAS SEFTON, 0F SI-IA VV, AND JAE/LESEDWARD LEES, 0F OLDHAM, ENGLAND.

ROLLEEFOR DRAWING MECHANISM FOR FIBROUS MATERIAL.

Original application filed January 26, 1923, Serial No. 615,177.

Divided and this application filed July 5, 1923. Serial No. 649,748.

To all whom it may concern:

Be it known that we, ROBERT Go'r'rAM, THonAs Snr'roN, and JAMES EDWARDLnns, subjects of the King of the United Kingdom of Great Britain andIreland, and residents of 55 Worcester Street, Oldham, in the county ofLancaster, England, 10 Oak Street, Shaw, in the county of Lancaster,

- England, and 11 Queens Road, Oldham, in

against collars made to revolve or against.

other surfaces made to revolve or to travel and particularly relates toself weighted rollers for drawing or drafting mechanisms used to effecthigh drafting or great extensions of fibrous material.

The principal object of this invention is to obviate the defectsexperienced in the use of self weighted rollers in the methods hithertocustomary in drawing or drafting mechanisms especially in cases in whichthe self weighted rollers are very light, through such rollers failingto be revolved with approximate regularity by friction against thefibrous material on which they are made to bear or the rollers orsurfaces with which they co-operate.

With this principal object, the invention consists in self weightedrollers formed of sleeves which are mounted freely around 7 andeccentrically movable relatively to axles made to revolve in use forholding them in position and have between them and the axles springs forensuring the turning of the sleeves with the axles without the axlesimparting ortransmitting pressure to the sleeves.

The accompanying drawing shows rollers forming illustrative embodimentsof this invention. Figs. 1, 3 and 5 are side elevations partly inlongitudinal section and Figs. 2, 4: and 6 are transverse sections, thelines numbered in correspondence with fig ures indicating the severalplanes on which sections are taken. The same numerals of referenceindicate corresponding part-s.

- In the roller shown in Figs. 1 and 2, 7 is the axle formed with acentral boss 71 and two cylindrical arbors or rods 72 extending fromthat boss 71. The axle 7 is provided with two sleeves 8 loose around thearbors 7:2 and free to move for a colnvenient distance eccentrically inrelation to them. Barrelshaped or tubular springs 9 are applied in thelongitudinal holes 73 of the sleeves 8 and around the arbors 72 to bearlightly against the interior surfaces of the sleeves 8 and preferablymade to grip the arbors 72. The boss 71 is made of a diameter such thatit will hold up the axle 7 by bearing upon the fluted roller or othersurface with which the roller shown is to co-operate while thediametersof the arbors 72 and the external diameters of the sleeves 8and the diameters of the longitudinal holes 78 through them are madesuch that the sleeves 8 can move so far eccentrically in relation to thearbors 72 as to bear by only or substantially only their own weight onfibrous material or the fluted roller or other cooperating surface onwhich fibrous material is to be pressed while the springs 9 bear lightlyagainst the interior surfaces of the sleeves 8.

The springs 9 are made light and easily yielding so that while bearingagainst the sleeves 8 and against the arbors 72 so as to ensure theturning of the sleeves 8 with the axle 7 they will not make the sleeves8 bear with more or substantially more than just their own weight onfibrous material beneath them. More than one sprin 9 may be used in eachsleeve 8 if desirable. The arbors 72 being prevented by the boss 71 fromapplying pressure or substantial pressure to the sleeves 8 servepractically only to keep the sleeves 8 in position. The boss 71 bears onthe fluted roller or other 00- operating surface on which fibrousmaterial is to be pressed and promotes or ensures the turning of theaxle 7, and the springs 9 touching the interior surfaces of the sleeves8 frictionally cause the sleeves 8 to turn with the axle'7 while bearingby only or substantially only their own weight on fibrous material oragainst the co-operating roller or surface and without or substantiallywithout the axle 7 imparting or transmitting pressure to them. Twocollars 10 equal in diameter to the boss 71 so like it to bear onthe-fluted roller or other cooperating surface and to transmit movementto tl1e.axle. 7 are pushed tightly or otherwise secured on the arbor 72.The arbors 72 project through the collars 10 so that the roller can berevolved in guides similarly to ordinary top rollers of drawing ordrafting mechanisms.

ln Figs. 3 and 4 an axle 11 generally similar to that shown in Figs. 1and 2 with a central boss 111 from which extend cylindrical arbors 112is provided with two sleeves 12 which are applied loosely around thearbors 112 and made movable eccentrically in relation to them by beingformed with longitudinal holes 121 larger in diameter than the arbors112. The arbors 112 are furnished with transverse holes 113 in which areloosely fitted light and easily yielding springs 13 in compression tobear lightly with their ends against the interior surfaces of thesleeves l2 and to afford frictional connexion between the sleeves 12 andthe arbors 112 to ensure the turning of the sleeves 12 with the axle 11.Although the springs 13 are free to move lengthwise in the holes 113 andso are little liable to bind in the holes 173, they are preferably madelight and easily yielding so that even should they bind in the holes 113they will not make the sleeves 12 bear with substantially more than justtheir own weight on fibrous material beneath them. There may be onespring 13 or more in each arbor 112, two being shown. Preferably in theuse with a sleeve 12 of a plurality of springs 13 in holes 113 in anarbor 112 the holes 113 for the springs 13 are formed in position topresent the springs 13 in such relative positions that the sleeve 12 maybe moved with approximately equal ease in all directions eccentricallyin relation to the axle 11. In each arbor 112 shown the transverse holes113 are formed with their center lines in planes at right angles so thatwhen one is horizontal the other is vertical. Two collars 1 1 of thesame diameter as the boss 111 so as like it to bear on the fluted rolleror other (Jo-operating surface and to transmit movement to the axle 11are pushed tightly or otherwise secured on the arbors 112.

In Figs. 5 and 6 an axle 15 generally similar to those shown in Figs. 1and 2 and Figs. 3 and 4:, with a central boss 151 from which extendcylindrical arbors 152 is provided with two sleeves 16 which are appliedaround the arbors 152 and made movable eccentrically in relation to themby being formed with holes 161 of larger diameter than the arbors 152.Between the sleeves 16 and the arbors 152 carrying them are applied flatcoiled springs 17 adapted to bear lightly against the interior surfacesof the sleeves 16. There may he one spring 17 or more used with eachsleeve 16 two being shown and preferably the springs 17 are made to gripthe arbors 152 to which they are applied so as to be held to them whilebearing sufficiently against the interiors of the sleeves 16 around themto afford the friction requisite to ensure that the sleeve 16 shall turnwith the axle 15. The springs 17 are made light and easily yielding soas to afford the requisite frictional connexion between the sleeves 16and the arbors 152 without causing the sleeves 16 to bear withsubstantially more than just their own weight on fibrous materialbeneath them. Two collars 18 of the same diameter as the boss 151 so aslike it to bear on the fluted roller or other cooperating surface and totransmit movement to the axle 15 are pushed tightly or otherwise securedon the arbors 152.

Springs may be applied in other ways to afford frictional connexionbetween the sleeves and the axles while transmitting only very slightpressure to the sleeves. For example, springs as shown in Figs. 5 and 6to bear lightly against the sleeves may be made to bear lightly againstthe axle but sufficiently to ensure turning of the sleeves with theaxles, or springs may be held as by their expansion to the sleeves andmade to bear against the axle lightly but suffi-. oieiitly to ensureturning of the sleeves with the axle. Also a sprin applied as in Figs. 5and 6 may be mountec in a groove formed circumferentially around a bossformed on the arbor with which it is used. In different constructionsthe axles and roller sleeves may be of different materials and be formedand disposed in other ways without departure from the spirit of thisinvention as embodied in the claims following. Thus the roller sleevesmay be of any formation and material appropriate to the ways, mechanismsor machines in which they are to be used, as for example they may beformed of metal, wood. vulcanite or other material suitable and smooth,fluted or of other form or may be formed of cores of metal, wood, orother material with coverings of leather or other material appropriateor one sleeve or more may be provided around one axle. Similarly theaxles may be formed or furnished in any suitable way with bosses ordriving parts for revolving the axles through bearing against or beingmade to engage with and so to be revolved by the rollers or surfaces'made to travel, against which the sleeves are to press fibrousmaterial, or by parts provided on such rollers or surfaces. The bossesor driving parts provided on the axles for revolving them may be smoothsis or plain or fluted or roughened or covered with leather or adaptedin any other way for hearing against or engaging with and receivingmotion from fluted rollers or other surfaces against which fibrousmaterial is to be pressed by the sleeves of the rollers.

The weight of the axles and bosses or driving parts may be made to servealone for causing the bosses or driving parts to bear against or engagewith the rollers or surfaces made to travel such an axle being called aself weighted axle or the axles may be weighted or made subject tospring pressure in any way convenient as, for example, by weights orsprings applied to bear on the axles or in circumferential groovestherein in the parts between sleeves so that their revolution may bepromoted while they will have no or approximately no part in pressingthe sleeves against the fibrous material and the fibrous materialagainst the roller surfaces against which it is to be pressed. Thesprings 9, 13,12 besides affording frictional connexion for turning thesleeves with the axles on which they are respectively mounted fulfilalso the function of resisting movement of the sleeves from theco-operating rollers or surfaces with which they are used andc0unteracting the tendency of the inertia of the sleeves to delay orhinder the return of the sleeves to proper bearing on the fibrousmaterial against the co-operating rollers or surfaces and to interferewith the equable bearing of the sleeves on such fibrous mate-- rial.Rollers comprising eccentrically movable sleeves mounted around axlesand used along with springs for ensuring the turning of thesleeves withthe axles according to this invention maybe employed to co-operate withany kind or form of'rollers or other surfaces in any forms of drawing ordrafting mechanisms and may be used as the only means of pressingfibrous material against the rollers or surfaces with which theycooperate or may be used in pressing fibrous material against rollers orsurfaces with which other co-operating pressing rollers or devices areused.

What we do claim as our invention and desire to secure by Letters Patentis: g

1. In a self weighted roller for a drawing mechanism hereinbeforeindicated a self weighted revoluble axle having means for bearing uponand being revolved by a moving part with which the roller is tocooperate and so supporting and bringing about the revolution of theaxle, a sleeve mounted around and eccentrically movable relatively tothe shaft for bearing substantially by only its own weight on fibrousmaterial and a spring in driving engagement with such axle and saidsleeve for causing the sleeve to turn with the axle while leaving saidsleeve freely movable relatively to the axle.

2. In a self weighted roller for a drawing mechanism as hereinbeforeindicated a self weighted revoluble axle having means for bearing uponand being revolved by a moving part with which the roller is toco-opcrate and so supporting and bringing about the revolution of theaxle, a sleeve mounted around and eccentrically movable relatively tothe shaft for hearing substantially by only its own weight on fibrousmaterial and springs in driving engagement with such axle and saidsleeve for causing the sleeve to turn with the axle while leaving saidsleeve freely movable relatively to the axle.

3. In a self weighted roller for a drawing mechanism as hereinbeforeindicated a self weighted revoluble axle having means for bearing uponand being revolved by a moving part with which the roller is toco-operate and so supporting and bringing about the revolution of theaxle, sleeves mounted around and eccentrically movable relatively to theshaft for bearing substantially by only their own weight on fibrousmaterial and springs in driving engagement with such axle and saidsleeves for causing the sleeves to turn with the axle while leavingsaild sleeves freely movable relatively to the In testimony, that weclaim the foregoing as our invention, we have signed our names thisnineteenth day of June 1923.

ROBERT COTTAM. THOMAS SEFTON. JAMES EDWARD LEES.

